Improved mill for tempering- clay



No. 83,361. PATBNTED OCT. 27.; 1868,

G. GARNELL, s. WILLIAMS & W. ELLIS.

- MILL POR- TEMPERING CLAY.

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with game ffm.

GEORGE CARNELL,-SAMUEL WILLIAMS, AND WILLIAM- ELLIS, or

PHILADELPHIA, PENNSYLVANIA. I Letters Patent No. 83,361, dated October 27, 1868.

MROVED MILL FOR TEM PERING- CLAY.

I n The Schedule referred to hi these Letters Patent and making put of the name.

Be it known thatwe, GEORGE GARNELL', SAMUEL "WILLIAMs, and WILLIAM ELLIS, all of the city of Philadelphia, and State of Pennsylvania, have invented certain Improvements -in a Mill for Tempering Clay;-

and' We do hereby declare the following is a full, clear,

and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, The nature of ourinvention consists of the following: In casting the rack with a cap or coveryto keep it clear of dirt; inthe saddle, in which the rack works;

and also in. dishing the wheel which works the clay.

To, enable others skilled in theart to make and use our invention, we will proceed to describe its construction and operation.

Figure l'is a plan,

' Figure 2 isan elevation. I

Fignre13 is a section through a partof the machine. Figure 4 is the rack, inverted.

.A represents the circular trough, in whichthe clayis kneaded by the tempering-wheel B. p

The stationary cog-wheel O, gearing into the cogwheel D, which carries, on the other end of the shaft d, the pinion E, arencarly similar to those in common.

use.

H is the rack, {nude with two straight sides, connected at each endhy the semicircular racks h it.

These racks are cast upon a-cap or cover, h, which efi'eetually prevents any clay or stones frbm clogging up the rack and pinion. .In the centre of the cap h is cast the web "h which reaches nearly to the rack at each end.

. The shaft of the pinion E bears against this said web I in gear all the way around.

This. rack is connected to the wheel B by a, ring, In,

It in its travel around the rack, and is thus kept close working in a groove upon thecollar of the said wheel.

As the pinionE traverses the length of the rack,

the rack, is forced outwards and inwards carrying with 'itthe'wlieel B, sliding upon the shaft N. The rack is retained in its place by thesaddle M, which is secured to plateP. I

A thin plate inteiposes between the plate P and rack H, and on which the rack slides. The upper band to is bolted down upon the twouprights, so as just to clear the rack-cover, and it is wide enough to permit the lateralniotion given to the rack at each end of the stroke. The wheel B is dished outwards, that is to say, the centre of the wheel is further out from the rack than the circumference.

Byflthis arrangement, the clayis not thrown out of the trough on the outer edge, as it is when a straight wheel is used.

We do not claim the u'seof a rack and pinion for giving motion to the clay-wheel B, nor do we claim a dished wheel, except as applied in the manner and for the purpose specified; but i. We claim the inverted double rack H, cast with a cover, It, and internal web, h in combination with saddle M and pinion E, for operating the wheel -B of a clay-mill, in the manner substantially as shown and .desorib I GEORGE OARNELL. .Witne'sses: SAMUEL WILLIAMS.

'WM. R. Hams, WM. ELLIS.

Guns. M. CLAYTON. 

